Lock for heads of knowles looms



Dec. 1, 1931. P. c. HERING 1,834, 0

LOOK FOR HEADS OF KNOWLES LOOMS Filed Jan. 15, 1929 lire/72W Maw-M ##oragc Patented Dec. 1 1931 Y UNITED STA-res) MASSACHUSETTS LOCK FOB/HEADS or KNOWLES Looms Application'liled January 15, 1929.- Serial No. 332,641.

This invention relates to imnrovementsin the so-called Knowles head looms and itis the. general object of the invention to prevent the operation of the loom-with the reverse 5 key inabnormal orpattern reversing position. 1

The usual Knowles loom employs upper and lower cylinder gearswhich through intermediate mechanism operate'the harness frames and alsothe drop boxes. Whenit is necessary to pick out'an imperfection in the cloth it is customary first to disconnect the upright shaft which drives the head mo-1 tion from the loom driving gear and thenpull a reversing key forwardly the efiect of which is to reverse the driving connections for the pattern chain. A handwheel is then rotated to move the cylinders forwardly in the. same direction in which they normally 7 rotate-but the pattern chainby running in reverse order permits the weaver to'take out the nicks in the opposite sequencefrom that in which they were. laid until the defective pick is reached. Before the loom'can be returned'to normal rimnin-g condition the. re-

verse key must be pushed in and the clutch on the upright shaft moved to running .position to connect the head with the rest of the loom. v I Due to neglector oversight the weaver will occasionally leave thereverse key out but throw the clutch into proper position. As a result the pattern will be reversed both as to weave and color and it may also happen on a pick and pick loom that the drop boxes will be so placed that two shuttles will be opposite the race at the same time, thus caus ing a shuttle smash. It is an important object of my present invention to provide means whereby the head motion-of the loom'cannot be'restored to'runnlng position until the re-? verse key ,has been restored to'its' normal position. a The drive an. upright shaft, havingqsecured thereto a' set forth,

for the Knowles head comprises PATENTIOFFICE PAUL c. enema, or LAWRENCE, MASSACHUSETTS, ASSIGNOR To oRoMProiv &' KNOWLES LOOM wonxs, or worwnsrnn, massncnusnrrs; A CORPORATION or collar and on-which is slidably mounted pin holder carrying a in which extends.

through the collar and into engagement with a driving gear. It is a more detailed object of my present invention to provide a lock controlled automatically by the reverse key which will move into restraining position reverse key is out. i

, With these and other objects in view which will appear as the description proceedsmy invention, resides in thecombination and arrangeinentof parts hereinafter described and set forth in the claims.

in the accompanying drawings wherein a convenient embodiment 'of my invention is Fig. l is a side elevation showing my invention applied to the usual form of Knowles head, and '1- Fig. '2 is a, detailed horizontalsection onv an enlarged scale taken on line, 22 of Fig. 1.

Referring to Fig. 1, I have shown a loomside 10 which supports front and rear, arches 11 and 12, respectively. These. arches may support upper and lower cylinder gears 13 and 14, respectively, for the harness frames not shown, and may support also smaller upper and lower cylinders 15 and 16, respec- 'tively, for the boxes not shown. The upper cylinders are driven by a bevel gear l7 mesh ing with a driving bevel gear 18-secured to an upright shaft 19. In a similar manner the lower cylinders are driven by a bevel gear 20 meshing with a gear21 also secured tothe upright shaftMThe cylinders are pro-' vided with gear teeth 22 around a portion only of their periphery, the remainder being blank as at 23. i I

The lower end of the shaft is supported'by' a box or bearing 24: and there is rotating freely on the bottom of said shaft 19 adriving bevel gear 25. A collar 26 is secured to the shaft 19 by a screw 27 and there is extending into said collar a driving pin 28 adapted to pass entirely through said collar and have engagement with a portion of the driving bevel gear 25.

The pin is secured to a holder 29 having a hub 30 provided with a groove 31. The latter receives one end of an arm 32 which moves with another arm 33 around a fixed axis. Connected to and extending forwardly from the arm 33 is a rod 3 1 connected as at 35 to the lower end of a shifting lever 36 pivoted as at 37 to the loom frame.

Shown at the upper right hand side of F ig. 1 is a system of gears indicated generally at R,

the purpose of which is to effect reversal of the pattern chain driving gear P. Said system of gears is controlled by a key 38 which is normally in the dotted line position shown in Fig. 1. When in this position the pattern chain not shown will move forwardly so that the'indication given both to the harnesses and boxes will be in the required sequence.

The matter thus far described is of common construction and forms no part of my present invention, the reverse key being substantially the same as shown in patent to Sundquist No. 1,547,466 and the clutch mechanism located at the bottom of said shaft 19 may be substantially the same as that shown in patent to Vattie No. 1,593,? 36. It will be understood that under normal running conditions the shifting lever 36, the key 38, the arm 32,

. and the key holder 29 will be in the dotted line position shown in Fig. 1, and that upward movement of the holder 29 by shifting lever 36 to the full line position will disconnect the shaft 19 from the driving gear 25.

My invention relates more particularly to means for preventing the restoration of the clutch on the upright shaft to normal driving position so long as the reverse key 38 is in reversing position shown in full lines in Fig. 1. In carrying my invention into effect I provide a lever 50 pivoted as at 51 to a fixed stand 52 mounted on the loom frame. lever 50 is extended below its pivot and is connected as at 53 to a rod head 5% adjustably connected with a rearwardly extended rod 55. The latter extends through a small stand 56 mounted on the gear guard 57 and is so placed as to be movable under the pin holder 29 as shown in Fig. 1 when the reverse key is moved to the full line reversing position shown in said figure.

At the time of pick-out the weaver will first pull the shifting handle from the dotted to the full line position shown in Fig. 1 the effect of which will be to lift the holder 29 to the full line position to disconnect the head from the driving bevel gear 25. The reverse key may then be pulled forwardly the effect of which will be to project the rear end of the rod 55 under the holder 29. The picking-out Said operation may then begin and when completed the weaver will push the reverse key back or to the left as viewed in Fig. 1 to assume the dotted line position. The parts are so proportioned that restoration of the reversekey to normal position will withdraw the rod 55 from the pin of the holder 29. The shifting lever 36 may then be restored to normal position, the pin holder 29 moving downwardly without interference. Should the weaver attempt to throw the shifting lever 36 without first restoring the reverse key to proper position, the rod 55 will prevent downward movement of the holder 29 and thereby give an indication that the reverse key is still out.

From the foregoing it will'be seen that I have provided a very simple me'ans'for looking the clutch for the upright shaft of a Knowles head loom in such a way that the head cannot be driven or connected operatively to the loom so long as the reverse key is in pattern chain. reversing position. Itwill be seen more particularly thatl have provided means whereby movement of the reverse key to abnormal position automatically places an obstruction in the path of movement of the pin holder toward normal driving position.

Having thus described my invention it will be seenthat changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom having mutilated cylinder gears, an upright shaft operatively connected to the gears, pattern driving mechanism, a reversing key for the latter, a driving member, a clutch-for the upright shaft to cooperate with the driving member, and connection-s between the reverse key and clutch whereby thelatter will be prevented from moving to it position and where it is able to transmit driving force from the driving member to the upright shaft when the key is in pattern driving mechanism reversing position, said connections at the time of normal operation of the loom being out of operative engagement with said clutch.

2. In a loom having mutilated cylinder gears, an upright shaft operatively connected to the gears, pattern driving. mechanism, a reversing key for the latter, a driving gear to beoperatively related to the upright shaft, a pin holder slidably mounted with respect to the shaft to establish operative connection between the shaft and the driving gear, and a lock controlled by the reverse key effective when the latter is in pattern driving mechanism reversing position to lie between the pin holder and driving gear to prevent the pin holder from having operative connection with respect to the driving gear.

1 3. In a loom having'mutilated gear cylinders, an upright shaft operatively conn cted 1 to the gears, patterndriving mechanism, a reversing key for thelatter, a driving gear to be operatively related to the upright shaft, a pin holder slidably mounted with respect to the shaft to establish operative connection between the shaft and the driving gear, connections from the reverse key efiective when the latter is in pattern driving mechanism reversing position to prevent the pin holder from having operative connection -with respect to the driving gear, said connection comprising a lever operatively connected to the reverse key, and a rod movable by the lever into and out of the path of movement of the pin holder.

l. A pattern mechanism for a loom having pattern driving mechanism and an upright shaft, a driving gear to be operatively related to the upright shaft, a pin holder above the driving gear and'movable along the shaft to establish driving connection between the shaft and the driving gear, a reversing device for the pattern mechanism, and means controlled by said reversing device to be moved under the pin holder to prevent the latter from establishing operative connection between the upright shaft and the driving gear.

5. A pattern mechanism for a loom having for the patternvmechanism, the members he lng movable independently of the reversingmeans to be out of operative relation with In testimony whereof have hereunto aflixed my signature. 7 V

' PAUL C. HERING.

pattern driving mechanism and an upright shaft, a driving gear tobe operatively related to the upright shaft, a pin holder above the driving gear and movable along the shaft to establish driving connection between the shaft and the driving gear, a reversing device for the pattern mechanism, and means controlled by said reversing device to be moved under the pin holder to prevent the latter from establishing operative connection between the upright shaft and the driving gear, said means comprising a rod movable under the pin holder when the latter is in inoperative position to prevent the latter from moving to operative'position when the reverse key is in pattern mechanismreversing position.

6. In a pattern controlling m'echanismfor a loom, pattern surface driving mechanism, a driving member, means including a clutch interposed between the driving member and the pattern surface driving mechanism to operate the latter when the clutch is in nor- 7 mal driving position, reversing means for the pattern surface driving mechanism, said clutch being movable independently of the reversing means, and a device operable by the reversing means when the latter moves to reverse the pattern surface mechanism to prevent the clutch from having connection with the member.

7 In a loom, a driving member, a driven member, pattern mechanism operatively related to the driven member and being actuated when the driven member cooperates with the driving member, reversing means 

